Bichaed h



(Model.)

R. H. BROWN. TUNNAGT: TON HEATING TUBES..l

Patented Mar. 13'

WITNESSES ATTORNEYS. V

N. Pnzns wmsngm 0.o.

UNITED STATES RICHARD H. BROWN, OE OMAHA, NEBRASKA, AssIGNOE Or ONEHALE To i Y, JOHN REED, OE sAME PLAGE.

FURNACE FOR HEATING TUBES.

sPEcrrrcArroN forming para of Letters Patent No. 27s,944,.datea March 1a, 1883.

Application mea september 1, rss2. (Mener.)

To all whom fit may concern: movement on a vertical standard, m, at the' Be it known that I, RICHARD H. BROWN, of side of the furnace, the slide being provided Omaha, in the county of Douglas and State ot' with a suitable catch engaging the standard, Nebraska,`haveinvented a new and Improved so as to sustain the post in any position in 55 Furnace for Brazing and Welding vFloc-Tubes, which it may be placed. A balance-weightm, of which the followingis a full, clear, and exact is also provided for oounterbalancing the Slide, description. post, and tlue, so that the post can be moved. The object of my invention is to constrncta up and down more readily. The support 7c is furnace completely arranged for brazing and fitted at its under side with a hollow1 extension, V6o 10 welding tubes, by the use of which such work o,for use with lines longer than can be received maybe done at a great saving of time and fuel. by the post z', the post in that case being re- ,To that end my invention consists in a furmoved .from the support, andthe tine passed nace constructed and arranged as hereinafter down into the extension o. The hole h in the described and claimed. top ot' the furnace is provided with slides p, 6r Reference is to be had to the accompanying closed tightly around the ilue while the brazdrawings, forming part of this specification, in ing is progressing. i which similar letters ofreferenceindi'cate cor- At opposite sides of the furnace are apresponding parts in all the figures. ertures g g, for receiving a flue that is to he p Figure 1 is a side elevation of my improved welded. At one side is a mandrel, r, supported 70 furnace. Fig'. 2 is a Vertical transverse section by a horizontal arm from a stapdard, p', which of the saine on the line a: m, Fig. 1. Fig. 3 is is fitted adjustably to the base B, so that the a plan View of the furnace. Fig. 4 is a vertical mandrel may be set to and from the swages. section on line y y,Fig. 3. s s are the swages, the lower one ofwhich A is the body of the furnace, which may be is supported by a xed standard, and the up- 75 `made of cast or sheet iron and lined with reper one is carried by an arm, s', which is pivbrick. The body is elevated on posts from a oted to a bracket on the standard. To the arm` base, B, of suitable character. s is connected a spring, t, that serves to throw ais a grate arranged for shaking and dumpthe moving swage upward after each blow, ing the lire. such movement being limited by a suitable 8O o b is the blast-pipe, entering the furnace bestop. This upward movement of the swage neath the grate; and c is a blast-door, fitted isto allow the due to be turned while being for closing the bottom opening beneath the operated upon. The mandrels and swa-ges grate, so as to retain the blast and insure a are made removable from their supports, so

better consumption ot' the fuel. that they can be replaced by Others of different 85 d is a bridge-'wall fitted within the furnace sizes, according as the work may require. for continin g the heat around the work. In the operation of bra-zing, the flue is sup c is the escape-flue, and fis the coal-magaported by the post fi, which may be lowered to zine, constructed as an inclined chute at the bring the end of the ue within the furnace A front of the furnace and above the grate, so for heating. Then properly heated the post 9o 4o that the fuel may slide readilydown to the tire. is to be raised, and the 4end ot' the flue thus g is a'door tted to the coal-magazine for projected from the opening h in the top ofthe closing the same tightly. furnace in position for convenient manipula- The top ofthe furnace is attached by bolts tion. In welding, the flue is passed through so as to allow vof its removal when the furnace the openings g so as to bring thejoint within 95 requires rebricking. 'The top is also provided `the furnace. In this position it may be obwith peeptuhes u u, for observing the work served through the peep-tuhes a n, and when while in the furnace. The top and bottom of the required heat is obtained it is to he drawn the furnace are formed with apertures h h, for out upon the mandrel and between the swages the brazing-post @which is attached by screw- Then by striking the movable swage with a roo l 5o ing to asupport, k. The support kis suspended hammer the work is readily completed. These by an arm from a slide, l, which is fitted for operations may be performed at a great saving of time and fuel. The tubes while in the furnace are free from contact with the fuel, so that the joints are left clean and a more perfeet connection insured than when the brazing or Welding is done in the re. The workmen are free from the heat of the furnace, the sparks, and the dust, While at the same time being able to Watch the -heating operation closely. Any ordinary fuel may be used in this furnace, and the furnace is adapted for use in heating blanks for various kinds of Work.

Having thus fully described my invention, Iclaiin as newand desire t0 secure by Letters Patent- 1. The furnace for-brazing and welding consisting of the body A, having side apertures, g, and top and bottom apertures, h h, the fuelreservoir f, blast-pipe b, and blast-door c, constructed and arranged substantially as shown and described.

2. The standard m, standing beside the furnace, the sleeve l sliding thereon, the support lc on an arm projecting from said sleeve, and

the post i, removably secured in support k, in

RICHARD H. BROWN.

Witnesses: GEORGE A. WILsoN,

ELIJAH DUNN. 

